Update: According to Outsports.com, the slur — ¡Puto! — was chanted by Mexico’s supporters during goal kicks by the opposing team’s goal keeper.

The word is slang for “fag” or “man whore” or “coward.” Some say its use in soccer is a cultural phrase that means cowardly and is not directed at gays, but the meaning is clearly designed to mock the opponent as weak and unmanly.